Question 1 :
A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called as:

Question 4 :
Identify two correct statements from the following.<br>(i) Rennin is industrially produced by Mucor pusilus<br>(ii) Streptokinase is industrially produced by Pseudomonas pudica<br>(iii) Alkaline serine protease is produced by Bacillus licheniformis<br>(iv) DNA polymerase is produced by Trichoderma reesi.<br>

Question 6 :
What is the process called due to which idli and dosa makes it fluffy and soft?

Question 7 :
What would happen if oxygen availability to activated sludge flocs is reduced ?<br>

Question 8 :
Organisms that cannot be seen by naked eyes is called as

Question 9 :
Match column I with column II and select the correct option from the given codes.<br/><table class="wysiwyg-table"><tbody><tr><td></td><td>Column I</td><td></td><td>Column II</td></tr><tr><td>A.</td><td><i>Aspergillus niger</i></td><td>(i)</td><td>Ethanol</td></tr><tr><td>B.</td><td><i>Clostridium butylicum</i></td><td>(ii)</td><td>Statins</td></tr><tr><td>C.</td><td><i>Saccharomyces cerevisiae</i></td><td>(iii)</td><td>Citric acid</td></tr><tr><td>D.</td><td><i>Trichoderma polysporum</i></td><td>(iv)</td><td>Butyric acid</td></tr><tr><td>E.</td><td><i>Monascus purpureus</i></td><td>(v)</td><td>Cyclosporin</td></tr></tbody></table>

Question 14 :
The product of which has been commercialised for lowering blood cholesterol.

Question 18 :
Which one of the following is used in the production of citric acid?

Question 20 :
A compound produced by an organism that inhibits the growth of another micro-organism is called

Question 28 :
Which one is the most important role of microorganisms for the well being of humans?

Question 29 :
In the treatment of waste water discharge, which treatment stage involves biological&#160;treatment?

Question 33 :
Match the following<table class="wysiwyg-table"><tbody><tr><td>i)&#160; <i>Rhizopus</i>&#10;&#10;&#10;&#9;&#10;&#9;&#10;&#9;&#10;&#9;&#10;&#10;&#10;&#10;&#10;</td><td>a) Malaria</td></tr><tr><td>ii) &#10;&#10;&#10;&#9;&#10;&#9;&#10;&#9;&#10;&#9;&#10;&#10;&#10;<i>Lactobacillus</i>&#10;&#10;</td><td>b) Idli, Dosa</td></tr><tr><td>iii) Yeast</td><td>c) Curd formation</td></tr><tr><td>iv) Protozoa</td><td>d) Bread mould</td></tr></tbody></table>

Question 37 :
Identify the blank spaces A, B, C and D in the following table and select the correct answer.<br><table class="wysiwyg-table"><tbody><tr><td><b>Type of microbe</b></td><td><b>Scientific name</b></td><td><b>Commercial product</b></td></tr><tr><td>Bacterium</td><td>A</td><td>Streptokinase</td></tr><tr><td>B</td><td>Aspergillus niger</td><td>Citric acid</td></tr><tr><td>Fungus</td><td>Trichoderma polysporum</td><td>C</td></tr><tr><td>Bacterium</td><td>D</td><td>Butyric acid</td></tr></tbody></table>

Question 40 :
Select the correct option to fill up the blanks. <br/>(i) _______ are used in detergent formulations and are helpful in removing oily stains from the laundry. <br/>(ii) _______ are ripened by growing <i>Penicillium roqueforti </i>on them. <br/>(iii) ______ are produced without distillation whereas,&#160; &#160;are produced by distillation of the fermented broth. <br/>(iv) ______ antibiotic was used to treat American soldiers wounded in world war II. <br/>(v) _______ is also called as kusht rog.&#160;